r+10=10.2

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Solution for r+10=10.2 equation: 


Simplifying
r + 10 = 10.2

Reorder the terms:
10 + r = 10.2

Solving
10 + r = 10.2

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-10' to each side of the equation.
10 + -10 + r = 10.2 + -10

Combine like terms: 10 + -10 = 0
0 + r = 10.2 + -10
r = 10.2 + -10

Combine like terms: 10.2 + -10 = 0.2
r = 0.2

Simplifying
r = 0.2

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